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Data and analysis scripts are available below for the following publications: Noret, N., Hunter, S. C., & Rasmussen, S. (2021). The role of cognitive appraisals in the relationship between peer-victimization and depressive symptomatology in adolescents: A longitudinal study. *School Mental Health*, *13*(3),548-560.[https://doi.org/10.1007/s12310-021-09414-0][1] **Abstract** Underpinned by the transactional model of stress (Lazarus & Folkman, 1984), the aim of this pre-registered study was to test the role of cognitive appraisals (threat, challenge, control, blame, and perceived social support) in the longitudinal relationship between peer-victimization and depressive symptomatology. Measures of peer-victimization, cognitive appraisal (threat, challenge, control, blame, and perceived social support), and depressive symptomatology were included in a self-report questionnaire, and data were collected at three-time points each one month apart. Participants were 530 adolescents aged 11 to 14 who reported experiencing peer-victimization at the beginning of this study. Results of the cross-lagged panel analyses found both an association between peer-victimization and depressive symptomatology after three months, alongside an association between depressive symptomatology and later peer-victimization. Perceived social support from parents/ guardians, teachers, or close friends did not significantly moderate this relationship. Peer-victimization at the start of the study was significantly associated with challenge, but not threat, appraisals one month later. Both threat and challenge appraisals in the second month of the study were related to depressive symptomatology at the end of the study, one month later. A small significant total indirect effect via threat and challenge appraisal was found, though neither was a significant mediator on its own. This study highlights the role of challenge and threat appraisals in adolescents’ adaptation to peer-victimization. Pre-print available here: https://www.researchgate.net/publication/348815094_The_role_of_cognitive_appraisals_in_the_relationship_between_peer-victimization_and_depressive_symptomatology_in_adolescents_A_longitudinal_study ---------- Noret, N., Hunter, S. C., & Rasmussen, S. (2022). The Personal Experiences Checklist Short Form (PECK-SF): Tests of invariance across gender and over time. *Psychological Assessment, 34*(5), 496–502. https://doi.org/10.1037/pas0001118 **Abstract** Peer-victimization is a frequent experience for many children and adolescents. Accurate measurement of peer-victimization is essential for better understanding such experiences and informing intervention work. While many peer-victimization and bullying scales exist, they often lack important psychometric information. The short form of the Personal Experiences Checklist (PECK-SF) provides a brief measure of peer-victimization. Existing psychometric data supports the use of the scale as a measure of peer-victimization. However, there are no reports of invariance testing, limiting our ability to confidently use the scale to compare scores across boys and girls and for use in longitudinal research studies. Therefore, the aim of this study is to test the PECK-SF for invariance across gender and over time. Data were collected as part of a longitudinal study of 11- to 14-year-olds who provided data at two time points 2 months apart (NTime 1 = 744 NTime 2 = 333). Confirmatory factor analysis supported the one-factor structure of the PECK-SF. Invariance testing demonstrated strict invariance over time and across gender. The use of the PECK-SF is recommended when examining gender differences, or conducting longitudinal studies, in peer-victimization. Pre-print available here: [https://www.researchgate.net/publication/359108715_PECK_SF_Invariancedocx][1] [1]: https://www.researchgate.net/publication/359108715_PECK_SF_Invariancedocx
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